| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __ASM_VDSO_VSYSCALL_H |
| #define __ASM_VDSO_VSYSCALL_H |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <linux/timekeeper_internal.h> |
| #include <vdso/datapage.h> |
| |
| #define VDSO_PRECISION_MASK ~(0xFF00ULL<<48) |
| |
| extern struct vdso_data *vdso_data; |
| |
| /* |
| * Update the vDSO data page to keep in sync with kernel timekeeping. |
| */ |
| static __always_inline |
| struct vdso_data *__arm64_get_k_vdso_data(void) |
| { |
| return vdso_data; |
| } |
| #define __arch_get_k_vdso_data __arm64_get_k_vdso_data |
| |
| static __always_inline |
| int __arm64_get_clock_mode(struct timekeeper *tk) |
| { |
| u32 use_syscall = !tk->tkr_mono.clock->archdata.vdso_direct; |
| |
| return use_syscall; |
| } |
| #define __arch_get_clock_mode __arm64_get_clock_mode |
| |
| static __always_inline |
| int __arm64_use_vsyscall(struct vdso_data *vdata) |
| { |
| return !vdata[CS_HRES_COARSE].clock_mode; |
| } |
| #define __arch_use_vsyscall __arm64_use_vsyscall |
| |
| static __always_inline |
| void __arm64_update_vsyscall(struct vdso_data *vdata, struct timekeeper *tk) |
| { |
| vdata[CS_HRES_COARSE].mask = VDSO_PRECISION_MASK; |
| vdata[CS_RAW].mask = VDSO_PRECISION_MASK; |
| } |
| #define __arch_update_vsyscall __arm64_update_vsyscall |
| |
| /* The asm-generic header needs to be included after the definitions above */ |
| #include <asm-generic/vdso/vsyscall.h> |
| |
| #endif /* !__ASSEMBLY__ */ |
| |
| #endif /* __ASM_VDSO_VSYSCALL_H */ |
